<?php
/**
 * Project:     Rebel PHP Framework
 * File:        Autoload.php
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * @link http://www.rebelphpframework.org
 * @copyright 2007 Emanuele Colonnelli
 * @author Emanuele Colonnelli <emanuele.colonnelli at gmail dot com>
 * @package kernel
 * @version 1.0
 */

if(define(__FILE__,true)) {

	define('KERNEL_CLASSPATH',realpath(dirname(__FILE__).sprintf('%s..%s',
															DIRECTORY_SEPARATOR,
															DIRECTORY_SEPARATOR)));
															
	define('APP_CLASSPATH',realpath(sprintf('%s%s.rebel%sclasses%s',	
															$_SERVER['DOCUMENT_ROOT'],
															DIRECTORY_SEPARATOR,
															DIRECTORY_SEPARATOR,
															DIRECTORY_SEPARATOR
															)));
	define('MODS_CLASSPATH',realpath(sprintf('%s%s.rebel%smods%s',	
															$_SERVER['DOCUMENT_ROOT'],
															DIRECTORY_SEPARATOR,
															DIRECTORY_SEPARATOR,
															DIRECTORY_SEPARATOR
															)));
															
	
	class Rebel_Autoload {
										
		public static function register() {
			if(!spl_autoload_register(array(__CLASS__,'load'))) {
				throw new Exception('COULD NOT ACTIVATE AUTOLOAD STACK');
			}
		}//:-
		
		public static function load($class) {
			
			if(
				self::find($class,KERNEL_CLASSPATH) ||
				self::find($class,APP_CLASSPATH)	||
				self::find($class,MODS_CLASSPATH))
			{
				return true;
			} else {
				throw new Exception(sprintf('COULD NOT FIND CLASS %s',$class));
			}
			
		}//:-
		
		private static function find($classname,$classpath) {
			$cp = str_replace("_",DIRECTORY_SEPARATOR,$classname);
			if(is_file($fullpath = sprintf('%s%s.php',$classpath,$cp))) {
				require_once($fullpath);
				
				if(!class_exists($classname)) {
					return false;
				} else {
					return true;
				}
				
			} else {
				return false;
			}
		}//:-
		
	}///:-
	
}
?>